package com.safeluck.aaej.app.config;
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import org.apache.commons.beanutils.PropertyUtilsBean;
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import org.apache.commons.lang3.StringUtils;
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import org.springframework.beans.BeansException;
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import org.springframework.beans.FatalBeanException;
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import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
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import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
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import org.springframework.util.Assert;
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import java.beans.PropertyDescriptor;
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import java.lang.reflect.Method;
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import java.lang.reflect.Modifier;
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import java.lang.reflect.ParameterizedType;
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import java.lang.reflect.Type;
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import java.util.Arrays;
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import java.util.List;
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public final class BeanUtil extends PropertyUtilsBean implements BeanFactoryPostProcessor {
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private static ConfigurableListableBeanFactory beanFactory; // Spring应用上下文环境
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@Override
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public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
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BeanUtil.beanFactory = beanFactory;
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}
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@SuppressWarnings("unchecked")
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public static <T> T getBean(String name) throws BeansException {
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return (T) beanFactory.getBean(name);
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}
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public static <T> T getBean(Class<T> clz) throws BeansException {
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T result = (T) beanFactory.getBean(clz);
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return result;
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}
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/**
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* getParameterizedType方法慨述:获取父类的泛型类型 <br>
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* 创 建 人：伍乾伦 <br>
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* 创建时间：2015年6月24日 下午2:18:58 <br>
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* 修 改 人：(修改了该文件，请填上修改人的名字) <br>
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* 修改日期：(请填上修改该文件时的日期) <br>
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*
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* @param clazz <br>
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* @param index <br>
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* @return Class<T>
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*/
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@SuppressWarnings("unchecked")
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public static <T> Class<T> getParameterizedType(Class<?> clazz, int index) {
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Type parameterizedType = clazz.getGenericSuperclass();
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if (!(parameterizedType instanceof ParameterizedType)) {
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parameterizedType = clazz.getSuperclass().getGenericSuperclass();
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}
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if (!(parameterizedType instanceof ParameterizedType)) {
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return null;
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}
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Type[] actualTypeArguments = ((ParameterizedType) parameterizedType).getActualTypeArguments();
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if (actualTypeArguments == null || actualTypeArguments.length == 0) {
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return null;
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}
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if (actualTypeArguments[0] instanceof ParameterizedType) {
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parameterizedType = actualTypeArguments[0];
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return (Class<T>) ((ParameterizedType) parameterizedType).getRawType();
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}
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return (Class<T>) actualTypeArguments[0];
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}
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/**
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* 概 述： (浅)拷贝对象属性到目标对象，忽略部分属性的拷贝 <br/>
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* 创 建 人：wuqianlun <br/>
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* 创建时间：2016年4月5日下午7:25:53<br/>
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* 修 改 人：wuqianlun<br/>
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* 修改日期：2016年4月5日下午7:25:53<br/>
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*
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* @param from
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* @param to
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* @param ignores
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*/
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public static void copyIgnoreProperties(Object from, Object to, String... ignores) {
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Assert.notNull(from, "Source must not be null");
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Assert.notNull(to, "Target must not be null");
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PropertyDescriptor[] targetPds = org.springframework.beans.BeanUtils.getPropertyDescriptors(to.getClass());
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List<String> ignoreList = Arrays.asList(ignores);
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for (PropertyDescriptor targetPd : targetPds) {
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Method writeMethod = targetPd.getWriteMethod();
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if (writeMethod == null || ignoreList.contains(writeMethod.getName())) {
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continue;
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}
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PropertyDescriptor sourcePd = org.springframework.beans.BeanUtils.getPropertyDescriptor(from.getClass(), targetPd.getName());
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if (sourcePd == null) {
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continue;
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}
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Method readMethod = sourcePd.getReadMethod();
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if (!(readMethod != null && writeMethod.getParameterTypes()[0].isAssignableFrom(readMethod.getReturnType()))) {
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continue;
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}
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try {
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// 性能考虑？
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if (!Modifier.isPublic(readMethod.getDeclaringClass().getModifiers())) {
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readMethod.setAccessible(true);
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}
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Object value = readMethod.invoke(from);
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// 空字符串，作为NULL值处理
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if (value instanceof String && StringUtils.isBlank(value.toString())) {
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value = null;
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}
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if (!Modifier.isPublic(writeMethod.getDeclaringClass().getModifiers())) {
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writeMethod.setAccessible(true);
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}
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writeMethod.invoke(to, value);
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} catch (Throwable ex) {
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throw new FatalBeanException("Could not copy property '" + targetPd.getName() + "' from source to target", ex);
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}
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}
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}
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/**
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* 概 述： (浅)拷贝对象属性到目标对象，仅仅拷贝设置的属性 <br/>
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* 创 建 人：wuqianlun <br/>
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* 创建时间：2016年4月5日下午7:26:04<br/>
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* 修 改 人：wuqianlun<br/>
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* 修改日期：2016年4月5日下午7:26:04<br/>
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*
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* @param from
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* @param to
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* @param includes
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*/
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public static void copyIncludeProperties(Object from, Object to, String... includes) {
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Assert.notNull(from, "Source must not be null");
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Assert.notNull(to, "Target must not be null");
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Assert.notNull(includes, "includeProperties must not be null");
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if (includes.length == 0) {
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return;
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}
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PropertyDescriptor[] targetPds = org.springframework.beans.BeanUtils.getPropertyDescriptors(to.getClass());
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List<String> includeList = Arrays.asList(includes);
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for (PropertyDescriptor targetPd : targetPds) {
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Method writeMethod = targetPd.getWriteMethod();
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if (!(writeMethod != null && includeList.contains(targetPd.getName()))) {
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continue;
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}
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PropertyDescriptor sourcePd = org.springframework.beans.BeanUtils.getPropertyDescriptor(from.getClass(), targetPd.getName());
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if (sourcePd == null) {
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continue;
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}
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Method readMethod = sourcePd.getReadMethod();
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if (!(readMethod != null && writeMethod.getParameterTypes()[0].isAssignableFrom(readMethod.getReturnType()))) {
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continue;
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}
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try {
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// 性能考虑？
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if (!Modifier.isPublic(readMethod.getDeclaringClass().getModifiers())) {
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readMethod.setAccessible(true);
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}
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Object value = readMethod.invoke(from);
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// 空字符串，作为NULL值处理
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if (value instanceof String && StringUtils.isBlank(value.toString())) {
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value = null;
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}
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if (!Modifier.isPublic(writeMethod.getDeclaringClass().getModifiers())) {
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writeMethod.setAccessible(true);
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}
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writeMethod.invoke(to, value);
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} catch (Throwable ex) {
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throw new FatalBeanException("Could not copy property '" + targetPd.getName() + "' from source to target", ex);
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}
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}
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}
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}
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